STR-DA3700ES - Sony Audio Service Manual (repair manual). Page 4

UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution:  Some printed circuit boards may not come printed with 

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.
•  Unleaded solder melts at a temperature about 40 °C higher 

than ordinary solder.

 

Ordinary soldering irons can be used but the iron tip has to be 
applied to the solder joint for a slightly longer time.

 

Soldering irons using a temperature regulator should be set to 
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if 

the heated tip is applied for too long, so be careful!

• Strong 

viscosity

 

Unleaded solder is more viscous (sticky, less prone to fl ow) 
than ordinary solder so use caution not to let solder bridges 
occur such as on IC pins, etc.

•  Usable with ordinary solder
 

It is best to use only unleaded solder but unleaded solder may 
also be added to ordinary solder.

NOTE  OF  REPLACING  THE  IC5001  ON  THE  DSP  
BOARD
IC5001 on the DSP board cannot exchange with single. When this 
part is damaged, exchange the complete mounted board.

NOTE  OF  REPLACING  THE  IC3601  ON  THE  D-VIDEO  
BOARD
Replacement of IC3601 on the D-VIDEO board used in this unit 
requires a special tool.

NOTE  OF  REPLACING  THE  IC3511  AND  IC3513  ON  
THE  D-VIDEO  BOARD
IC3511 and IC3513 on the D-VIDEO board cannot exchange with 
single. When these parts are damaged, exchange the complete 
mounted board.

NOTE  OF  REPLACING  THE  IC101,  IC304,  IC501  AND  
IC2503  ON  THE  NETWORK  BOARD
IC101, IC304, IC501 and IC2503 on the NETWORK board cannot 
exchange with single. When these parts are damaged, exchange the 
complete mounted board.

NOTE  OF  REPLACING  THE  IC106,  IC107,  IC206  AND  
IC207  ON  THE  NETWORK BOARD
Replacement of IC106, IC107, IC206 and IC207 on the NET-
WORK board used in this unit requires a special tool.

US and Canadian models

4-282-077-0[]

AEP and UK models

4-282-077-1[]

UPDATE  OF  SOFTWARE  OF  IC3601  ON  THE  D-
VIDEO  BOARD,  IC2501  ON  THE  CONTROL  BOARD, 
IC763  ON  THE  DISPLAY  BOARD
Perform operation of the following when the update of software 
of the IC3601 on the D-VIDEO board, IC2501 on the CONTROL 
board and IC763 on the DISPLAY board are necessary.

Procedure:
1.  Connect the RS232C terminal on rear side of this unit (J861 on 

the HAT board) and PC by using the RS-232C cable.

2.  Press the [\/1] button to turn on the main power.
3.  The update is executed by using application on PC.
4.  When the update ends, turn off the main power.
5.  Remove the RS-232C cable from the RS232C terminal on rear 

side of this unit (J861 on the HAT board) and PC.

Before using the receiver for the first time, 
initialize the receiver by performing the 
following procedure. This procedure can also 
be used to revert back to the factory default 
settings.

Performing initial setup 

operations (clearing all 

memorized settings)

?

/1

TONE MODE

2CH/A.DIRECT

1

Press ?/1 to turn off the 
receiver.

2

While holding down the TONE 
MODE and 2CH/A.DIRECT, 
press ?/1 to turn on the 
receiver.

3

The “CLEARING” appears on the 
display window for a while, then changes 
to “CLEARED !”
Changes or adjustments made to the 
settings are now reset to the defaults.

It takes about one minute for the memory to be 
cleared completely. Do not turn the receiver off until 
“CLEARED !” appears on the display.

You can check the status of the receiver by the 
message. See the following table to solve the 
problem. If any problem persists, consult your 
nearest Sony dealer.

The receiver is covered and ventilation holes 
are blocked. The receiver will automatically 
turn off after a few seconds. Remove the 
object covering the upper panel of the 
receiver and turn on the power again.

Irregular current is output to the speakers 
due to a short circuit on the speaker 
terminals. The receiver will automatically 
turn off after a few seconds. If the protective 
device on the receiver is activated due to a 
short-circuit problem, turn off the receiver. 
Check the connection of the speakers and 
turn on the power again.

Check that the ventilation hole on the top of 
the receiver are not blocked. Place the 
receiver in a location with adequate 
ventilation to prevent heat build-up in the 
receiver.

Update the receiver to a newer software
version.

Error messages

‡ If you use the receiver in main zone, 

connect the receiver to a TV via an HDMI 
cable.

‡ If you connect the receiver to a TV via a 

video cord, set “Playback Resolution” to 
“480i/576i”.

‡ If you connect the receiver to a TV via a 

component video cord, set “Playback 
Resolution” to a parameter appropriate to 
your TV.